Wayne Parrish
sage
Reged: 02/23/04
Posts: 440
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Things are looking pretty good about seeing Harry this week,if he can see me. We start the job in his "neck of the woods" tomorrow so I hope to be able to see him one day this week.Have a great night. Wayne
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Rich V.
scholastic sledgehammer
Reged: 01/02/05
Posts: 918
Loc: Carson Valley, Nevada USA
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Thanks, Wayne!
Rich V
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Binoculars: 33-150x100 Saturn III, 16x70FMT-SX, 10x50 PCF-V, 10x43 DCF-SP, 10x35 E2, 7x35 E, 8x30 E2, 7x26 Custom, 8x23AS Diplomat, 8x23 Travelite
Scopes: C9.25, 6" f8 reflector, SV80S
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Rich V.
scholastic sledgehammer
Reged: 01/02/05
Posts: 918
Loc: Carson Valley, Nevada USA
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After more time in use I thought I'd make a couple corrections to my initial observations posted above:
Quote:
Having only had two nights out so far, under poor seeing to boot, I'm not making any judgements about collimation at 150x. I haven't experimented L vs. R orientation yet but any leeway toward alignment will be welcome.
I've spent more time with the 150x eyepieces and find the collimation is OK for me; there is a slight horizontal convergence (relative to the images) and a very tiny bit of step but my eyes easily accomodate by crossing naturally just as I would looking at an object closer than infinity. No apparent strain. Switching out eyepieces L vs. R or rotating the eyepieces in increments of 120° doesn't seem to matter. I can live with it!
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The 33x eyepieces (22.8mm) are ideal for me with 2° FOV and 3mm exit pupil. The view through them has similar characteristics to the 16x70s but with much more eye releif (and a lot more stars!) The eye relief is almost too much, similar to Nikon SEs. These will see a lot of use; they're just what I was looking for.
My original comparison to Fuji 16x70s actually only ends up applying to the sharp, spacious views since the AFOV is approx. the same. Both sets of Miyauchi eyepieces show sharp images right to the field stops; there is no field curvature like the Fujinons. The effect is more like my Nagler zoom but with a 66° AFOV rather than 50°. These are the first binoculars I've owned that don't show either astigmatism or field curvature at the edge of field. Very nice!
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The 501HDV is a bit wimpy for these 13# bins but it will do until I come up with a mount decision.
The 501HDV head is actually working very well; the 5.5# overcenter spring (like the old non-HDV 503) overcomes the backwards tilt easily by just sliding the QR plate a bit forward on the head. The length of the binocular is a help in keeping balance. I'm not a fan of the new Bogen/Manfrotto head's viscous/teflon combination clutch surfaces; the teflon makes the motion a bit jerky compared to my older heads. The plus side over the older viscous only designs is less stiffness in cold weather.
Still waiting for better seeing and smokeless skies. It's looking like a tough order for a while. 
Rich V
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Binoculars: 33-150x100 Saturn III, 16x70FMT-SX, 10x50 PCF-V, 10x43 DCF-SP, 10x35 E2, 7x35 E, 8x30 E2, 7x26 Custom, 8x23AS Diplomat, 8x23 Travelite
Scopes: C9.25, 6" f8 reflector, SV80S
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Wayne Parrish
sage
Reged: 02/23/04
Posts: 440
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Rich V, well i tried to see Harry today but he returned my call of about 10:00 am too late for me to get by there. I am going to try again tomorrow as he said he would be there and answering the phone after 11:00 am. I'll keep you posted. Wayne
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CESDewar
GorillAstronomer
Reged: 01/16/05
Posts: 1734
Loc: Morganton, GA, USA
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Quote:
I'll keep you posted.
Definitely let us all know what you find out - and you know you can count me in for Ep's that fill the gap between 50x and 150x (wouldn't mind having 70x and 110x or something in that range!).
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medinabrit
professor emeritus
Reged: 10/27/04
Posts: 510
Loc: medina ohio USA.
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Same gos for me for the saturn 2,s. Something between 60
& 90 would be great.
Brian.
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Wayne Parrish
sage
Reged: 02/23/04
Posts: 440
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YEA ! YIPPEEEEE !,I finally got by Harry's today !!!!! He looked everything over and said he didn't think it was going to be a problem at all. He did say that they would probably be a little taller than the Miya's. Of course all of the talk was just that,talk,till he gets into the meat of things.Steuart,I think he may be calling on you since you have done the most experimenting with the Sat III,s. He is going to call me when he gets a pair together and we'll try them out.I left a pair of ep's with him for dimensions.I think he's going to be ready pretty quick with the prototypes.Harry is as nice in person as he is on the phone,so I think we'll have a good relationship. Wayne
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KennyJ
Reged: 04/27/03
Posts: 10029
Loc: Lancashire UK
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Wayne ,
This sounds promising .
I'm very pleased for the all you Miyauchi owners .
Quite a while before the Cloudy Nights forums came into being , I contacted Harry for some advice about some eyepiece related issues , with no possible sales or purchases involved , and I was very impressed with his willingness to try to help , purely for helping's sake .
Good luck with the project !
Kenny
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Two eyes and a preference to use both
Zeiss 7 x 42 BGAT
Captain's Helmsman 7 x 50
Nikon 10 x 42 Superior E
Swift Audubon Kestrel 10 x 50
Helios 15 x 70 Observation
Strathspey 20 x 90
Televue 76 APO
Zeiss 85 Diascope
Helios 102 f5 refractor
Various eyepieces barlows tripods mounts etc.
Panasonic Lumix DMC - TZ5 digital camera
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Rich V.
scholastic sledgehammer
Reged: 01/02/05
Posts: 918
Loc: Carson Valley, Nevada USA
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Thanks so much, Wayne! You've really got the ball rolling now.
Since I couldn't find the 55x I'm hoping for something along the line of 14mm, 10mm and around 7.5-8mm or thereabouts.
Rich V
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Binoculars: 33-150x100 Saturn III, 16x70FMT-SX, 10x50 PCF-V, 10x43 DCF-SP, 10x35 E2, 7x35 E, 8x30 E2, 7x26 Custom, 8x23AS Diplomat, 8x23 Travelite
Scopes: C9.25, 6" f8 reflector, SV80S
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medinabrit
professor emeritus
Reged: 10/27/04
Posts: 510
Loc: medina ohio USA.
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Many thanks to you Wayne for taking the time for the rest of us to benefit.
Brian.
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Wayne Parrish
sage
Reged: 02/23/04
Posts: 440
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Thanks Guys. I will stay the course now that the sails are up and full !! Have a great night
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CESDewar
GorillAstronomer
Reged: 01/16/05
Posts: 1734
Loc: Morganton, GA, USA
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Quote:
YEA ! YIPPEEEEE !,I finally got by Harry's today !!!!! .....Steuart,I think he may be calling on you since you have done the most experimenting with the Sat III,s.
Well I don't know that I can add much other than I did take a pair of the Siebert 17mm WA EP's and with the StellarVue OCS screwed into them, they came to focus quite reasonably.
I guess the real question is whether it's worth trying to build an adapter, or just provide a custom sleeve and built-in Barlow for existing Siebert EP's - personally I think both approaches would work just fine.
Finally, there's the question of whether it's feasible to mimic the locking arrangement that Miyauchi uses on its EP's. With 45° EP's this is an issue when nearing the Zenith.
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Rich V.
scholastic sledgehammer
Reged: 01/02/05
Posts: 918
Loc: Carson Valley, Nevada USA
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When I talked to Harry, he said he didn't have a means to make a bayonet type barrel. Instead, he said that he would likely use an O ring/groove solution.
Perhaps now that he has seen the Miyauchi arrangement, he'll be better able to access this.
Once Harry has made his determination, we'll probably have to put our heads together and make a "group decision" on what we really want; adapter or dedicated eyepieces or ???.
Having choices is good!
Rich V
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Binoculars: 33-150x100 Saturn III, 16x70FMT-SX, 10x50 PCF-V, 10x43 DCF-SP, 10x35 E2, 7x35 E, 8x30 E2, 7x26 Custom, 8x23AS Diplomat, 8x23 Travelite
Scopes: C9.25, 6" f8 reflector, SV80S
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Wayne Parrish
sage
Reged: 02/23/04
Posts: 440
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Harry had also talked about a rubber sleeve type arangement to hold the ep barrel in place. At least that is what i think he was talking about. Being an old machinist myself I know it would'nt be cost effective to even try the locking arrangement that Miyauchi builds.I think he will lean more toward fitting ep's to the bore that adapters,but then thats just my feeble opinion. Wayne
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Wayne Parrish
sage
Reged: 02/23/04
Posts: 440
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Hey Guys,Just an update to let you know I haven't heard back from Harry yet. He is pretty busy ,so i thought the week time period was pushing it. I'm sure he'll get to it as soon as he can. Wayne
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CESDewar
GorillAstronomer
Reged: 01/16/05
Posts: 1734
Loc: Morganton, GA, USA
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Quote:
Harry had also talked about a rubber sleeve type arangement to hold the ep barrel in place....
BTW - I think that would work fine. With 45° binoculars, the EP's are worst case at a 45° angle when looking at the Zenith, so even a small amount of friction would prevent them from falling out, but there does need to be something. Miyauchi themselves used an o-ring type solution in some of their binoculars and I agree that trying to mimic the mechanical locking system would be impractical...
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Rich V.
scholastic sledgehammer
Reged: 01/02/05
Posts: 918
Loc: Carson Valley, Nevada USA
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Thanks, Wayne, for the heads up. I've been really enjoying the SIIIs with the two sets of eps I have. The 33x are outstanding! They don't cut through smoke very well, however. The 150x still haven't been able to strut their stuff as seeing conditions here haven't been good enough. Somewhere around 100x would be more appropriate currently.
Whenever Harry gets to it will be fine by me. Your efforts are very much appreciated! 
Rich V
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Binoculars: 33-150x100 Saturn III, 16x70FMT-SX, 10x50 PCF-V, 10x43 DCF-SP, 10x35 E2, 7x35 E, 8x30 E2, 7x26 Custom, 8x23AS Diplomat, 8x23 Travelite
Scopes: C9.25, 6" f8 reflector, SV80S
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Wayne Parrish
sage
Reged: 02/23/04
Posts: 440
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WAKE UP,WAKE UP !!! Harry has a pair of somethings ready for trial fitting and I am going to do my best to get down to see him tomorrow,Thursday the 21 st.. I'll let you know what I find. Wayne
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Rich V.
scholastic sledgehammer
Reged: 01/02/05
Posts: 918
Loc: Carson Valley, Nevada USA
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Great news, Wayne!
Thanks a lot!
Rich V
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Binoculars: 33-150x100 Saturn III, 16x70FMT-SX, 10x50 PCF-V, 10x43 DCF-SP, 10x35 E2, 7x35 E, 8x30 E2, 7x26 Custom, 8x23AS Diplomat, 8x23 Travelite
Scopes: C9.25, 6" f8 reflector, SV80S
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CESDewar
GorillAstronomer
Reged: 01/16/05
Posts: 1734
Loc: Morganton, GA, USA
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Hey Wayne that is very good news! Definitely keep us posted on this! Even if you can't look through them, it would be interesting to know what FL and AFOV is planned...
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